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Posted to dev@camel.apache.org by "Martin Krasser (JIRA)" <ji...@apache.org> on 2010/07/22 21:20:51 UTC
[jira] Created: (CAMEL-2986) IllegalStateException in
CamelContinuationServlet under heavy load
IllegalStateException in CamelContinuationServlet under heavy load
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Key: CAMEL-2986
URL: https://issues.apache.org/activemq/browse/CAMEL-2986
Project: Apache Camel
Issue Type: Bug
Components: camel-jetty
Affects Versions: 2.4.0
Reporter: Martin Krasser
Assignee: Martin Krasser
Fix For: 2.5.0
Reason is a race between continuation.suspend() and continuation.resume(). It can occur that continuation.resume() is executed before continuation.suspend() leading to an IllegalStateException thrown by Jetty:
{noformat}
java.lang.IllegalStateException: DISPATCHED,initial
at org.eclipse.jetty.server.AsyncContinuation.dispatch(AsyncContinuation.java:364)
at org.eclipse.jetty.server.AsyncContinuation.resume(AsyncContinuation.java:769)
at org.apache.camel.component.jetty.CamelContinuationServlet$1.done(CamelContinuationServlet.java:85)
at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
at org.apache.camel.processor.UnitOfWorkProcessor$1.done(UnitOfWorkProcessor.java:104)
at org.apache.camel.processor.DefaultChannel$1.done(DefaultChannel.java:262)
at org.apache.camel.processor.RedeliveryErrorHandler$1.done(RedeliveryErrorHandler.java:302)
at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
{noformat}
This is the case when an async completion callback is faster than the thread that is concurrently executing the {{if (continuation.isInitial())}} block.
I'll commit a fix soon that also follows the recommendations in http://wiki.eclipse.org/Jetty/Feature/Continuations to always call continuation.suspend() before registering the continuation with a callback handler.
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[jira] Resolved: (CAMEL-2986) IllegalStateException in
CamelContinuationServlet under heavy load
Posted by "Martin Krasser (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/CAMEL-2986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martin Krasser resolved CAMEL-2986.
-----------------------------------
Resolution: Fixed
Fixed with revision 966815
> IllegalStateException in CamelContinuationServlet under heavy load
> ------------------------------------------------------------------
>
> Key: CAMEL-2986
> URL: https://issues.apache.org/activemq/browse/CAMEL-2986
> Project: Apache Camel
> Issue Type: Bug
> Components: camel-jetty
> Affects Versions: 2.4.0
> Reporter: Martin Krasser
> Assignee: Martin Krasser
> Fix For: 2.5.0
>
>
> Reason is a race between continuation.suspend() and continuation.resume(). It can occur that continuation.resume() is executed before continuation.suspend() leading to an IllegalStateException thrown by Jetty:
> {noformat}
> java.lang.IllegalStateException: DISPATCHED,initial
> at org.eclipse.jetty.server.AsyncContinuation.dispatch(AsyncContinuation.java:364)
> at org.eclipse.jetty.server.AsyncContinuation.resume(AsyncContinuation.java:769)
> at org.apache.camel.component.jetty.CamelContinuationServlet$1.done(CamelContinuationServlet.java:85)
> at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
> at org.apache.camel.processor.UnitOfWorkProcessor$1.done(UnitOfWorkProcessor.java:104)
> at org.apache.camel.processor.DefaultChannel$1.done(DefaultChannel.java:262)
> at org.apache.camel.processor.RedeliveryErrorHandler$1.done(RedeliveryErrorHandler.java:302)
> at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
> at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
> {noformat}
> This is the case when an async completion callback is faster than the thread that is concurrently executing the {{if (continuation.isInitial())}} block.
> I'll commit a fix soon that also follows the recommendations in http://wiki.eclipse.org/Jetty/Feature/Continuations to always call continuation.suspend() before registering the continuation with a callback handler.
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